Both my TRX-1 and TRX-2 sharing the same antenna at the same time is no different. I use my TRX-x's for NXDN and DMR Trunking until I get the LNC order right then my Unidens Track DMR Trunking better and miss less calls. Any trip in to a HIGH RF AREA I have to turn on the ATT as the Unidens keep right on talking. Confirmed this both in Memphis and Jackson Tn. But I have seen others that say they have better luck so your results may vary.